The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 2012
Filed:
Jun. 06, 2008
Shuji Inoue, Okayama, JP;
Takahiro Kobayashi, Osaka, JP;
Hiroshi Mitani, Osaka, JP;
Toshiki Onishi, Osaka, JP;
Yuichi Nishikoji, Kyoto, JP;
Shuji Inoue, Okayama, JP;
Takahiro Kobayashi, Osaka, JP;
Hiroshi Mitani, Osaka, JP;
Toshiki Onishi, Osaka, JP;
Yuichi Nishikoji, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A light output control device for laser light sources for respective RGB colors includes, for each of RGB, three sets, each including: a semiconductor laser for one of the colors; light output detection unit for detecting a light output from the semiconductor laser; light output adjustment unit for updating a light output target value; light output control unit for controlling the semiconductor laser based on the updated light output target value; and division unit for dividing the light output by an output from the light output adjustment unit to obtain a ratio of the rising of the light output, and includes rising determination unit for determining, based on results obtained by the respective division unit, a semiconductor laser with a slowest rising and outputs light output adjustment values for the respective colors. The light output adjustment unit update their respective light output target values based on the light output adjustment values. The light output control unit causes their respective corresponding semiconductor lasers to operate in accordance with a semiconductor laser whose rising time is slowest, based on the updated light output target values to keep RGB color balance upon start-up.